Subject: Re: wierd featurism
To: Darren Reed <firstname.lastname@example.org>
From: Alfred Perlstein <email@example.com>
Date: 12/21/2001 12:42:24
* Darren Reed <firstname.lastname@example.org> [011221 06:01] wrote:
> I work some folks who are old vms heads and they were talking, today,
> about per-file flush rates (i'm not sure if it is every N seconds or
> X pages per N seconds). It sounded wierd enough to be kinda cool in
> some very specific instances. Is that even remotely possible in unix?
Of course, it would just take a bunch of kernel code to do it. :)
It also depends on which implementation you're looking for. The
X pages per second sounds trivial by walking the dirty vnode list
every second. The N seconds one sounds a bit more tricky but you
could do it with the proper data structure.
-Alfred Perlstein [email@example.com]
'Instead of asking why a piece of software is using "1970s technology,"
start asking why software is ignoring 30 years of accumulated wisdom.'